staub



(N0 Model.)

H. STAUB. ROTARY STEAM ENGINE.

Patented Dec. v1'1 Il! Illllli N o Modlel.)

'H.'STAUB. ROTARY STEAM ENGINE.

8 Sheets-Sheet 2; l

No. 530,908'. Patented Deo. 11,4894.

I so

NiTnD STATES PATENT Frio.

HENRY STAUB, OF ALIEGIIEN Y, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH TOGUSTAV PEYER, OF SAME PLACE.

ROTARY STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 530,908, dated December11,1894'.

applicati@ nea June 4,1894. seran no. 513,461. (Numan.)

To @ZZ whom it may concern.-

Beit known that I, HENRY STAUB, a citizen of the United States, residingat Allegheny, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Rotary Steam-Engine, of which the following isa specication.

My invention relates to rotary steam engines of the class known 'aseccentric pisvton; and it has for its object to provide a ment, and awing or web carried by the cylinder and slidably swiveled in the coreforming the movable abutment. The steam-inlet is arranged axially withrelation to the cylinder, and is preferably formed by a bore in thedriven-shaft, the inlet opening being controlled by a suitable valvemechanism to admit steam continuously or at intervals, as may berequired.

In the course'of the following description various objects andadvantages of the invention will appear, and the Vnovel features of theconstruction are particularly pointed out in the appended claims.

In the drawingsz-Figure lis a longitudinal central section of an engineembodying my invention. Fig. 2 is a transverse section on the line 2-2of Fig. 1, with the cap-plate of the cylinder omitted, and showing thecylinder and core in their initial positions. Fig. 3 is a similar view,showing the cylinder and core at the quarter-revolution. Fig. 4 is asimilar View, showing the cylinder and core at the half-revolution.VFig. 5 is a transverse section of the steam-chest. Fig. 6 is a detailview in perspective of a portion of the drivenshaft showing thesteam-inletpport and the controlling-valve. Fig. 7 is an inner face viewof the removable cap of .the cylinder, and showing in dotted lines theradial channel communicating with the axial steam-inlet pipe, wherebythe steam is conveyed to the transverse steam-duct in the cylinder. Fig.8 is a detail View in perspective of the con- 55 trolling valve.

Similar numerals of reference indicate correspondng'parts in all thefigures of the drawlngs.

1 designates therotary cylinder, compris- 6o ing the ring 2, the rearplate 3, having a concentric sleeve 4, and the face-plate 5, said ringbeing divided at one side in the construction illustrated in thedrawings for the reception of a radialwing 6, which, as hereinafter morefully explained, forms the movable abutment. The sleeve4 is mounted uponaspindle 7 secured in a bearing 8 in the standard 9, which may besecured to a base-plate 10, and the front cap-plate 5 is also provided7o u with a sleeve l1 secured to the driven-shaft 12. The spindle 7 isprovided at the inner side of the cap 3 with a collar i3, and beyond thesaid collar with an eccentric journal 14, upon which is revolublymounted the core l5. The inner end of the radial wing 6 is swiveled inthe side of the core by means of a rocker 16 formed in separable partsor members 17 having flat inner surfaces in contact with the v wing andconvexed outer surfaces to tit in a So cylindrical seat 18 arrangedlongitudinally near the surface of the core. A cavity 19 is formed inand communicates with this seat to allow free movement of the extremityof the wing when the core and cylinder are ap- 8 5 proaching or leavingtheir initial position, as shown in Figs. 2 and 3.

The radiusof the core is such as to cause the surface of the latter tobear at one point against theinner wall or bore of the cylinder, 9o aswill be seen by a comparison of Figs. 2, 3 and 4, whereby the inner wallof the cylinder is arranged at a tangent to the core, and a cavity 2Omay be and preferably is formed in` the core opposite the abovedescribed scatto avoid irregular movement of the core.

The front cap 4 is .provided with a radial channel 21, whichcommunicates at its inner end with the bore 22 in the driven shaft, saidbore 22 forming the axial steam-inlet pipe and roo communicating at itsouter end with a transverse steam-chamber 23, which is formed in theinner surface of the wall of the cylinder contiguous to the plane of theabove described radial wing. The steam-exhaust port 24 is formed in thewall of the cylinder on the opposite side of said wing and adjacentthereto.

The driven shaft is mounted in a bearing 25 in oneend ofthe steam-chest26, saidsteamchest being mounted upon a suitable standard 27, which issecured to the above mentioned base; and the other end of thesteam-chest is closed by a removable cap 2S, also provided with abearing 29 for the driven shaft, as shown clearly in Fig. l. means forcommunicating power to the machinery to be driven, is secured to theexterior portion of the driven shaft.

The steam-inlet pipe, which in this case is formed asabovedescribed inthe drivenshat, is provided with an inlet-port 3l arranged spirally, andslidably mounted upon this pipe is a controlling valve 32 having aspiralface 33. The valve is preferably splitand provided at its extremitieswith an adjustingscrew 34, whereby it may be adjusted to the size of thepipe to take up lost motion by wear or otherwise, and the valve isfurther provided with an operating stem 35, which extends through aguide-opening 36 in the removable cap of the steam-chest,and may beprovided with any suitable operating mechanism, as a system oflevers,shcwn.at37. I t will be seen that the valve remainsstationaryduring the rotation ofthe inlet-pipeor driven shaft, and therefore owingto the spiral face thereof it is obvious that according tothe positionof the valve the inlet-port may be closed entirely or allowed to remainpermanently open, or may be opened and closed at longer or shorterintervals, as preferred. It' the annular portion of the valve isarranged in alignment with the inlet-port, said port will remainpermanently closed, and if the valve is withdrawn so that therotation oftheshaft does not bring the port under any part of the valve, said portwill remain permanently open; but if, on the other hand, the valve isarranged at an intermediate position theport will be carried under aportion of thevalveat each revolution and therefore the port will bealternately opened and closed and theintervals of opening and closingwill be varied according to the relative position of the valve. Thenarrow portion 38 of the valve is arranged at such a point as to admitthe full head of steam when the valve is open, as the cylinder and corereach their initial position, as vshown in Fig. 2.

From the above description it will bescen that the cylinder and corerotate in the same direction and synchronously by reason of the radiallydisposed wing, and that with the parts in the positions shown in Fig. 2when steam is admitted it enters the transverse steam-chamber in thewall of the cylinder and imparts motion in the direction indicated bythe arrows in said Fig. 2.

It will be seen that the contacting` surfaces A pulley 30 or other Fromthe above description it is obvious d that the number of contactingmovable parts is small, and the major portion of the friction `iscausedbetween the Wing and the rocker arranged in the core, this being asliding connection. The friction between the surface of the core and thewalls of the cylinder is small, for the reason that said parts move inthe samedirection and atapproximately the same speed, the relativepositions of the cylinder and the core remaining the samethroughout therevolutions of said parts.

Various charges in the forn1,proporti.on, and the minor detailsot'construction may be resorted to without departing from the spirit of theinvention or sacrificing any of the4 advantagesthereof.

Having described my invention, what I claim :is-

l. In a rotary engine, the combination with a casing, a driven-shaft, arotary cylinder fixed tothedriven shaft, a rotary eccentric corearranged in the cylinder in contact with one sido thereof, and awingcarried by the cylinder and connected to the core, whereby motion iscommunicated from the cylinder to the core, of a steam-inlet channelarranged concentric with the cylinder and communieating by a radialpassage with an inlet-port in the wall of the cylinder, substantially asspecified.

In a rotary engine, the combination of a casing, a drivenshaft providedwith an axial steam-inlet channel, a` valve for controlling the inlet ofsteam, a cylinder concentric with and carried by the driven-shaft, arotary eccentric coremounted withinithe cylinderand in contact at oneside with the inner surface thereof, and a wing carried by the cylinderand connected to the core, substantially as specified.

3. In a rotary engine, the combi-nation of a casing, a rotary cylinderhaving concentric sleeves mounted in bearings in opposite sides of thecasiug,a fixed spindle arranged in the sleeve at oneside of the cylinderand provided within the cylinder with an off-set or eccentric journal, acore mounted upon said eccentric journal, a wing carried by the cylinderand connected to the core, a tubular driven shaft secured in the sleeveat the opposite side of the cylinder, the bore of said shaftcommunicating with a steam` passage leading to a port in the cylinder,and a valve for controlling an opening communicating with the bore ofthe shaft, substantially as specified.

4.. The combination with a driven shaft, of

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a concentric revoluble cylinder, a core arranged eccentrically Withinthe cylinder, a wing connecting said cylinder and core, a steam-chamberand an exhaust-port arranged respectively upon opposite sides of andcontiguous to the plane of said wing, a steaminlet pipe connected to andco-axial with the cylinder and having a lateral port, and anonrotatablecontrolling valve encircling and slidably mounted upon saidinlet-pipe and having a spiral face to vary the intervals of theadmission and cut-o of the steam, substantially as specified.

5. The combination of a rotary cylinder, an eccentric contained core, awing connecting said core and cylinder, a steam-chamber and exhaust-portarranged respectively upon opposite sides of the plane of'said wing, abored driven shaft forming a steam-inlet pipe arranged concentric withthe cylinder and comzo municating' by a radial channel with saidsteam-chamber in the cylinder, a steamchest concentric with said drivenshaft, an inlet port formed in the side of the driven shaft andcommunicating with its bore, a non-roz 5 tatable controlling valveslidably mounted on the driven shaft within the steam-chest, and meansfor operating s'aid valve, substantially as specified.

In testimony that I claim the foregoing as 3o my own I have heretoaffixed my signature in the presence of two witnesses.

` HENRY STAUB.

Witnesses:

JOHN LINDER, JOHN BENDER.

